Finding the Fourth Proportional to 1,433.69, 1,977.77 and 908.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.69 : 1,977.77 = 908.81 : x
2. Step 2: Convert to fraction form
   1,433.69/1,977.77 = 908.81/x
3. Step 3: Cross multiply
   1,433.69x = 1,977.77 × 908.81
4. Step 4: Simplify right side
   1,433.69x = 1,797,402.72
5. Step 5: Solve for x
   x = 1,797,402.72/1,433.69
6. Step 6: Final answer
   x = 1,253.69